American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2018 > 218 > 2(S) > S762-S773
American Journal of Obstetrics and Gynecology > 2018 > 218 > 3 > 345.e1-345.e30
American Journal of Obstetrics and Gynecology > 2018 > 218 > 3 > 351.e1-351.e7
American Journal of Obstetrics and Gynecology > 2018 > 218 > 4 > 438.e1-438.e16
American Journal of Obstetrics and Gynecology > 2018 > 218 > 5 > 519.e1-519.e7